Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Millions	May 31, 2018	Aug. 31, 2017
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accounts payable	$ 1,360	$ 1,333
Property, plant, and equipment payables	1,143	1,018
Salaries, wages, and benefits	692	603
Income and other taxes	311	163
Customer advances	181	197
Other	311	350
Accounts payable and accrued expenses	$ 3,998	$ 3,664